Touch substrate and touch screen

ABSTRACT

The present application provides a touch substrate and a touch screen. The touch substrate includes a touch layer. The touch layer includes a first electrode and a second electrode. The first electrode includes a first protrusion and a first dummy electrode. The second electrode includes a second protrusion and a second dummy electrode. Adjacent two first protrusions or adjacent two second protrusions are spaced a size of at least one sub-pixel apart.

FIELD OF APPLICATION

The present application is related to the display field, andspecifically, to a touch substrate and a touch screen.

BACKGROUND OF APPLICATION

With development of display technology, touch screens are more and morecommonly used in electronic devices such as tablets and smartphones.Capacitive touch screens in the prior art are most widely used insmartphones, tablets, etc. Traditional capacitive screens use an indiumtin oxide (ITO) conductive film as material of touch electrodes. Thesekinds of capacitive screens have disadvantages of high price, highresistance, and difficulty in bending. Development of metal meshtechnology has made up for defects of the above ITO touch electrodes.

Currently, hovering touch is a new type of touch technology which allowsusers to complete mobile phone operations without touching a touchscreen (i.e., the touch screen is not grounded) when using the mobilephone. However, under a premise of good physical touch of the touchscreen in the prior art, sensitivity of the hovering touch is low, whichaffects user experience.

Therefore, a touch substrate which can solve the above technicalproblems is urgently needed.

SUMMARY OF APPLICATION

The present application provides a touch substrate and a touch screen tosolve a technical problem of low sensitivity of hovering touch of touchscreens in the prior art.

The present application provides a touch substrate, including asubstrate and a touch layer formed on the substrate. The touch layerincludes:

at least one first electrode group arranged along a first directionincluding at least two first electrodes arranged along a seconddirection and sequentially connected to each other, wherein any of thefirst electrodes includes at least one first connection region outsidethe first electrodes, and any of the first connection regions includesat least one first protrusion; and

at least one second electrode group arranged along the second directionincluding at least two second electrodes arranged along the firstdirection and sequentially connected to each other, wherein any of thesecond electrodes includes at least one second connection region outsidethe second electrodes, and any of the second connection regions includesat least one second protrusion.

The first protrusion is disposed between two adjacent secondprotrusions. The second protrusion is disposed between two adjacentfirst protrusions. The first connection region and the second connectionregion are engaged with each other to form a connection portion of thefirst electrode and the second electrode.

At least one first dummy electrode disposed in any of the firstelectrodes. The first dummy electrode is uniformly distributed in thefirst electrode. The first dummy electrode is insulated from the firstelectrode.

At least one second dummy electrode disposed in any of the secondelectrodes. The second dummy electrode is uniformly distributed in thesecond electrode. The second dummy electrode is insulated from thesecond electrode.

Adjacent two first protrusions or adjacent two second protrusions arespaced a size of at least one sub-pixel apart. The first dummy electrodeand the second protrusion are spaced the size of at least one sub-pixelapart. The second dummy electrode and the first protrusion are spacedthe size of at least one sub-pixel apart.

In the touch substrate of the present application, a number of the firstdummy electrode in any of the first electrodes is equal to a number ofthe second dummy electrode in any of the second electrodes.

A shape of the first dummy electrode in any of the first electrodes issame as a shape of the second dummy electrode in any of the secondelectrodes.

In the touch substrate of the present application, a pattern of any ofthe first connection regions is same as a pattern of any of the secondconnection regions.

In the touch substrate of the present application, the first protrusionand the second protrusion are cross-shaped.

In the touch substrate of the present application, the first protrusionin any of the first connection regions and the second protrusion in anyof the second connection regions have a same extension length.

The first protrusion extends from the first electrode to the seconddummy electrode in the second electrode. The second protrusion extendsfrom the second electrode to the first dummy electrode in the firstelectrode.

In the touch substrate of the present application, the first protrusionin any of the first connection regions and the second protrusion in anyof the second connection regions have different extension lengths.

An extension length of the first protrusion and/or the second protrusionare increased first and then decreased in the first connection regionand/or the second connection region.

In the touch substrate of the present application, the first electrode,the first dummy electrode, the second electrode, and the second dummyelectrode are composed of metal meshes.

In the touch substrate of the present application, the first electrodeis insulated from and crossed with the second electrode on the touchlayer through a breakpoint of the metal meshes. The first dummyelectrode is insulated from the first electrode through a breakpoint ofthe metal meshes. The second dummy electrode is insulated from thesecond electrode through a breakpoint of the metal meshes.

In the touch substrate of the present application, the metal meshesinclude a plurality of first metal traces and a plurality of secondmetal traces.

The plurality of first metal traces are crossed with the plurality ofsecond metal traces to form a plurality of meshes having a same shape asan outer circle of a corresponding sub-pixel.

In the touch substrate of the present application, the first electrodegroup further includes at least one first metal bridge disposed betweentwo adjacent first electrodes. The second electrode group furtherincludes at least one second metal bridge disposed between two adjacentsecond electrodes.

The first metal bridge, the first electrode, and the second electrodeare a same metal layer.

The first metal bridge and the second metal bridge are different metallayers.

The present application further provides a touch screen, including atouch substrate.

The touch substrate includes a substrate and a touch layer formed on thesubstrate. The touch layer includes:

at least one first electrode group arranged along a first directionincluding at least two first electrodes arranged along a seconddirection and sequentially connected to each other, wherein any of thefirst electrodes includes at least one first connection region outsidethe first electrodes, and any of the first connection regions includesat least one first protrusion; and

at least one second electrode group arranged along the second directionincluding at least two second electrodes arranged along the firstdirection and sequentially connected to each other, wherein any of thesecond electrodes includes at least one second connection region outsidethe second electrodes, and any of the second connection regions includesat least one second protrusion.

The first protrusion is disposed between two adjacent secondprotrusions. The second protrusion is disposed between two adjacentfirst protrusions. The first connection region and the second connectionregion are engaged with each other to form a connection portion of thefirst electrode and the second electrode.

At least one first dummy electrode disposed in any of the firstelectrodes. the first dummy electrode is uniformly distributed in thefirst electrode. The first dummy electrode is insulated from the firstelectrode.

At least one second dummy electrode disposed in any of the secondelectrodes. The second dummy electrode is uniformly distributed in thesecond electrode. The second dummy electrode is insulated from thesecond electrode.

Adjacent two first protrusions or adjacent two second protrusions arespaced a size of at least one sub-pixel apart. The first dummy electrodeand the second protrusion are spaced the size of at least one sub-pixelapart. The second dummy electrode and the first protrusion are spacedthe size of at least one sub-pixel apart.

In the touch screen of the present application, a number of the firstdummy electrode in any of the first electrodes is equal to a number ofthe second dummy electrode in any of the second electrodes.

A shape of the first dummy electrode in any of the first electrodes issame as a shape of the second dummy electrode in any of the secondelectrodes.

In the touch screen of the present application, a pattern of any of thefirst connection regions is same as a pattern of any of the secondconnection regions.

In the touch screen of the present application, the first protrusion andthe second protrusion are cross-shaped.

In the touch screen of the present application, the first protrusion inany of the first connection regions and the second protrusion in any ofthe second connection regions have a same extension length.

The first protrusion extends from the first electrode to the seconddummy electrode in the second electrode. The second dummy electrode andthe first protrusion are spaced the size of at least one sub-pixelapart.

The second protrusion extends from the second electrode to the firstdummy electrode in the first electrode. The first dummy electrode andthe second protrusion are spaced the size of at least one sub-pixelapart.

In the touch screen of the present application, the first protrusion inany of the first connection regions and the second protrusion in any ofthe second connection regions have different extension lengths.

An extension length of the first protrusion and/or the second protrusionare increased first and then decreased in the first connection regionand/or the second connection region.

In the touch screen of the present application, the first electrode, thefirst dummy electrode, the second electrode, and the second dummyelectrode are composed of metal meshes.

The first electrode is insulated from and crossed with the secondelectrode on the touch layer through a breakpoint of the metal meshes.The first dummy electrode is insulated from the first electrode througha breakpoint of the metal meshes. The second dummy electrode isinsulated from the second electrode through a breakpoint of the metalmeshes.

In the touch screen of the present application, the metal meshes includea plurality of first metal traces and a plurality of second metaltraces.

The plurality of first metal traces are crossed with the plurality ofsecond metal traces to form a plurality of meshes having a same shape asan outer circle of a corresponding sub-pixel.

In the touch screen of the present application, the first electrodegroup further includes at least one first metal bridge disposed betweentwo adjacent first electrodes. The second electrode group furtherincludes at least one second metal bridge disposed between two adjacentsecond electrodes.

The first metal bridge, the first electrode, and the second electrodeare a same metal layer.

The first metal bridge and the second metal bridge are different metallayers.

The present application increases a mutual capacitance between the firstelectrode and the second electrode by increasing a proportion of acorresponding electrode occupied by the dummy electrodes and a relativelength between the first electrode and the second electrode. Thisincreases multi-finger coaxial capacitance variation of a product underthe hovering touch and enhances touch sensitivity of the touchsubstrate.

DESCRIPTION OF DRAWINGS

FIG. 1 is a structural diagram of a touch layer in a touch substrate ofthe present application.

FIG. 2 is a first enlarged structural diagram of a region A in FIG. 1.

FIG. 3 is an enlarged structural diagram of a certain region in FIG. 1.

FIG. 4 is a second enlarged structural diagram of the region A in FIG.1.

FIG. 5 is a cross-sectional diagram of a partial region of the touchsubstrate of the present application.

FIG. 6 is a partially enlarged diagram of a touch layer in a touchsubstrate in the prior art.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

In order to make purposes, technical solutions, and effects of thepresent application clearer and more explicit, the present applicationis further described in detail below with reference to accompanyingdrawings and embodiments of the present application. It should beunderstood that specific embodiments described herein are only used toexplain the present application and are not used to limited the presentapplication.

Currently, hovering touch is a new type of touch technology which allowsusers to complete mobile phone operations without touching a touchscreen. However, under a premise of good physical touch of a touchscreen in the prior art, sensitivity of the hovering touch is low, whichaffects user experience. The present application provides the followingtechnical solutions based on the above technical problems.

The present provides a touch substrate, including a substrate 40 and atouch layer 100 formed on the substrate 40.

Please refer to FIGS. 1 and 2. The touch layer includes:

at least one first electrode group 10 arranged along a first direction Xincluding at least two first electrodes 11 arranged along a seconddirection Y and sequentially connected to each other, wherein any of thefirst electrodes 11 includes at least one first connection region 110outside the first electrodes 11, and any of the first connection regions110 includes at least one first protrusion 111; and

at least one second electrode group 20 arranged along the seconddirection Y including at least two second electrodes 21 arranged alongthe first direction X and sequentially connected to each other, whereinany of the second electrodes 21 includes at least one second connectionregion 210 outside the second electrodes 21, and any of the secondconnection regions 210 includes at least one second protrusion 211.

In this embodiment, the first protrusion 111 is disposed between twoadjacent second protrusions 211. The second protrusion 211 is disposedbetween two adjacent first protrusions 111.

In this embodiment, the first connection region 110 and the secondconnection region 210 are engaged with each other to form a connectionportion 200 of the first electrode 11 and the second electrode 21.

In this embodiment, the first direction is the X direction which isparallel to a horizontal direction. The second direction is the Ydirection which is parallel to a vertical direction.

In this embodiment, the touch layer 100 further includes at least onefirst dummy electrode 12 disposed in any of the first electrodes 11. Thefirst dummy electrode 12 is uniformly distributed in the first electrode11. The first dummy electrode 12 is insulated from the first electrode11.

In this embodiment, the touch layer 100 further includes at least onesecond dummy electrode 22 disposed in any of the second electrodes 21.The second dummy electrode 22 is uniformly distributed in the secondelectrode 21. The second dummy electrode 22 is insulated from the secondelectrode 21.

In this embodiment, adjacent two first protrusions 111 or adjacent twosecond protrusions 211 are spaced a size of at least one sub-pixelapart. The second dummy electrode 22 and the first protrusion 111 arespaced the size of at least one sub-pixel apart. The first dummyelectrode 12 and the second protrusion 211 are spaced the size of atleast one sub-pixel apart.

The present application reduces a distance between two adjacent firstprotrusions 111 or two adjacent second protrusions 211, or increases alength of the first protrusion 111 or the second protrusion 21. A mutualcapacitance between the first electrode 11 and the second electrode 21is increased, and a proportion of a corresponding electrode occupied bythe first dummy electrode 12 and the second dummy electrode 22 isincreased, so multi-finger coaxial capacitance variation of a productunder the hovering touch and enhances touch sensitivity of the touchsubstrate.

In this embodiment, a number of the first dummy electrode 12 in any ofthe first electrodes 11 is equal to a number of the second dummyelectrode 22 in any of the second electrodes 21.

In this embodiment, a shape of the first dummy electrode 12 in any ofthe first electrodes 11 is same as a shape of the second dummy electrode22 in any of the second electrodes 21. Shapes of the first dummyelectrode and the second dummy electrode 22 are not limited in thepresent application, which can be configured according to a specificembodiment.

In this embodiment, the first electrode 11, the first dummy electrode12, the second electrode 21, and the second dummy electrode 22 arecomposed of metal meshes 30.

Please refer to FIG. 3. the first electrode 11 is insulated from andcrossed with the second electrode 21 on the touch layer 100 through abreakpoint of the metal meshes 30. The first dummy electrode 12 isinsulated from the first electrode 11 through a breakpoint of the metalmeshes 30. The second dummy electrode 22 is insulated from the secondelectrode 21 through a breakpoint of the metal meshes 30.

In this embodiment, the first protrusion 111 and the second protrusion211 can be cross-shaped.

Taking a certain region in FIG. 1 as an example for description, themetal meshes 30 include a plurality of first metal traces 31 and aplurality of second metal traces 32. The plurality of first metal traces31 are crossed with the plurality of second metal traces 32 to form aplurality of meshes having a same shape as an outer circle of acorresponding sub-pixel. For ease of description, the metal meshes inFIG. 3 of the present application are rhombus meshes same as the priorart.

Please refer to FIGS. 2 and 4. A pattern of any of the first connectionregions 110 is same as a pattern of any of the second connection regions210.

Please refer to FIG. 2. The first protrusion 111 in any of the firstconnection regions 110 and the second protrusion 211 in any of thesecond connection regions 210 have a same extension length.

The first protrusion 111 extends from the first electrode 11 to thesecond dummy electrode 22 in the second electrode 21. The secondprotrusion 211 extends from the second electrode 21 to the first dummyelectrode 12 in the first electrode 11.

Please refer to FIG. 4. The first protrusion 111 in any of the firstconnection regions 110 and the second protrusion 211 in any of thesecond connection regions 210 have different extension lengths.

An extension length of the first protrusion 111 and/or the secondprotrusion 211 are increased first and then decreased in the firstconnection region 110 and/or the second connection region 210.

Please refer to FIGS. 1 to 5. The first electrode group 10 furtherincludes at least one first metal bridge 13 disposed between twoadjacent first electrodes 11. The second electrode group 20 furtherincludes at least one second metal bridge 23 disposed between twoadjacent second electrodes 21.

In this embodiment, the first metal bridge 13, the first electrode 11,and the second electrode 21 are a same metal layer. The first metalbridge 13 and the second metal bridge 23 are different metal layers.

Please refer to FIG. 5. At least one insulating layer 41 disposedbetween the second metal bridge 23 and the first electrode 11. At leasttwo first through holes 42 are disposed on the first insulating layer41. The second metal bridge 23 electrically connects adjacent two firstelectrodes 11 through the first through hole 42.

In this embodiment, the second metal bridge 23 is disposed between thesubstrate 40 and the touch layer 100, or the second metal bridge 23 isdisposed on the touch layer 100.

The technical solutions of the present application are described in thefollowing specific embodiments.

Please refer to FIG. 1. The touch layer 100 includes three columns ofthe first electrode groups 10 parallelly arranged along the X directionand three rows of the second electrode groups 20 parallelly arrangedalong the Y direction. Any of the first electrode groups 10 includesfour first electrodes 11 arranged along the Y direction and electricallyconnected to each other. Any of the second electrode groups 20 includesfour second electrodes 21 arranged along the X direction andelectrically connected to each other. The first electrode 11 isinsulated from and crossed with the second electrode 21.

Please refer to FIG. 2. In a region A, the plurality of first dummyelectrodes 12 are disposed in any of the first electrodes 11, and theplurality of second dummy electrodes 22 are disposed in any of thesecond electrodes 21. In this embodiment, four by four dummy electrodesare disposed in the first electrode 11 of the second electrode 21. Theshape of any of the dummy electrodes is the same.

In this embodiment, because an area of any of the first electrodes 11and an area of any of the second electrodes 21 can be substantially thesame, in a first electrode 11 or a second electrode 21, theirproportions of an area of a corresponding electrode occupied by thedummy electrodes are equal.

In the prior art, arrangements of the dummy electrodes are mainly usedto remove a technical problem of an unexpected visible streak effect.The present application is mainly used to reduce a proportion of an areaoccupied by the first electrode 11 and the second electrode 21, so aside capacitance between the first electrode 11 and the second electrode21 is reduced, and the sensitivity of the touch substrate in thehovering touch state is increased.

Please refer to FIG. 2. Any of the first connection regions 110coincides with any of the second connection regions 210. Any of thefirst connection regions 110 includes five first protrusions 111. Any ofthe second connection regions 210 includes five second protrusions 211.The first protrusion 111 and the second protrusion are engaged with eachother to form a complete pattern.

Please refer to FIG. 3. Although the first electrode 11, the first dummyelectrode 12, the second electrode 21, and the second dummy electrode 22are visually shown as one piece, the first electrode 11 and the firstdummy electrode 12 are insulated from the second electrode 21 and thesecond dummy electrode 22 through breakpoints of metal traces onboundary regions of the four. Therefore, the first protrusion 111 andthe second protrusion 211 are insulated from each other throughbreakpoints of metal traces between the first protrusion 111 and thesecond protrusion 211 in FIG. 2.

Compared with the prior art, this embodiment does not need to dispose adummy electrode between the first electrode 11 and the second electrode21 to remove technical problems such as visual hollowing out.

In addition, in the prior art, the first metal traces 31 are crossedwith the second metal traces 32 to form rhombus meshes, which correspondto data lines and scan lines. In the present application, the pluralityof first metal traces 31 are crossed with the plurality of second metaltraces 32 to form the plurality of meshes having the same shape as theouter circle of the corresponding sub-pixel, so the metal meshes 30 arecloser to a structure of an actual product.

Please refer to FIGS. 2 and 4. In order to ensure the sensitivity oftouch operation in each region, the pattern of any of the firstconnection regions 110 is same as the pattern of any of the secondconnection regions 210, which means that a pattern of any of the firstelectrode 11 is same as a pattern of any of the second electrode 21.This ensures that relative lengths between the first electrode and thesecond electrode in any regions are the same. In this embodiment, anarea between the first electrode 11 and the second electrode 21 directlyopposite to the first electrode 11 is related to the relative lengthbetween the first electrode 11 and the second electrode 21.

Please refer to FIG. 2. Any of the first protrusion 111 and any of thesecond protrusion 211 have the same extension length and shape. Thefirst protrusion 111 can extend to the second dummy electrode 22 as muchas possible, and the second protrusion 211 can extend to the first dummyelectrode 12 as much as possible, so the relative length between thefirst electrode 11 and the second electrode is increased, but the areaoccupied by the first electrode 11 and the second electrode 21 isreduced.

In this embodiment, the second dummy electrode 22 and the firstprotrusion 111 are spaced a size of one sub-pixel apart, and the firstdummy electrode 12 and the second protrusion 211 are spaced the size ofone sub-pixel apart. The relative length between the first protrusion111 and the second protrusion 211 is the largest, so the area betweenthe first electrode 11 and the second electrode 21 directly opposite tothe first electrode 11 is the largest, which increases the mutualcapacitance between the first electrode 11 and the second electrode 21,increases the capacitance variation of the product under the hoveringtouch, and enhances the touch sensitivity of the touch substrate.

Please refer FIG. 4. the first protrusion 111 in any of the firstconnection regions 110 and the second protrusion 211 in any of thesecond connection regions 210 have different extension lengths. Theextension length of the first protrusion 111 and/or the secondprotrusion 211 are increased first and then decreased in the firstconnection region 110 and/or the second connection region 210.

In this embodiment, the extension length of the protrusions in a middleregion of the first connection region 110 or the second connectionregion 210 has the largest extension length, and is close to a center ofa corresponding electrode. In order to avoid a conflict betweenextensions of two first protrusions 111, in a direction from the aboveprotrusions to two opposite sides, the extension length of thecorresponding protrusion is gradually reduced.

In this embodiment, the first dummy electrode 12 is disposed between twoadjacent second protrusions 211, and the second dummy electrode 22 isdisposed between two adjacent first electrodes 11. Because the extensionlengths of the first protrusion 111 and the second protrusion 211 areincreased, the areas of the first dummy electrode 12 and the seconddummy electrode 22 in this embodiment are reduced compared with those inFIG. 2.

Compared with FIG. 2, the relative length between the first protrusion111 and the second protrusion 211 in this embodiment is increased, sothe area between the first electrode 11 and the second electrode 21directly opposite to the first electrode 11 is the largest, whichfurther increases the mutual capacitance between the first electrode 11and the second electrode 21 but further reduces the area occupied by thefirst electrode 11 and the second electrode 21.

In FIGS. 2 and 4, compared with the prior art, the present applicationincreases the proportion of the area of the corresponding electrodeoccupied by the dummy electrodes to reduce the proportion of the areaoccupied by the corresponding electrode and the side capacitance betweenthe first electrode 11 and the second electrode 21. The relative lengthbetween the first electrode 11 and the second electrode 21 is increased,so the area between the first electrode 11 and the second electrode 21directly opposite to the first electrode 11 is increased, whichincreases the mutual capacitance between the first electrode 11 and thesecond electrode 21.

In the above embodiment, because the area of the first electrode 11 andthe second electrode 21 is reduced, which means that an effective toucharea of the first electrode 11 and the second electrode 21 is reduced,and the area between the first electrode 11 and the second electrode 21directly opposite to the first electrode 11 is increased, an actualvariation does not change when a touch is grounded. The area between thefirst electrode 11 and the second electrode 21 directly opposite to thefirst electrode 11 is increased, which increases the mutual capacitancebetween the first electrode 11 and the second electrode 21, increasesthe capacitance variation of the product under the hovering touch, andenhances the touch sensitivity of the touch substrate.

When an increased value of the area between the first electrode 11 andthe second electrode 21 directly opposite to the first electrode 11 isgreater than the area of the effective touch area of the first electrode11 and the second electrode 21, the touch sensitivity of the touchsubstrate is increased when the touch is grounded.

In the above embodiment, because an increased proposition of therelative length between the first electrode 11 and the second electrode21 in FIG. 4 is greater than that in FIG. 2, the embodiment of FIG. 4 isbetter than the embodiment of the FIG. 2 under permitted conditions ofprocesses.

Please refer to FIG. 6, which is a partially enlarged diagram of a touchlayer in a touch substrate in the prior art. Comparison is made belowwith reference to FIGS. 6 and 2. This embodiment takes areas in FIGS. 6and 2, which are both 4.2 mm*4.2 mm, as an example for comparison.Please refer to data in TABLE 1 for details.

TABLE1 Comparison of the data of the prior art with the improved typeImproved Prior art type Trace length of crossed 43142.23 um 45162.76 umelectrodes Proportion of dummy electrodes 18.85% 25%   Proportion offirst electrodes 40.72% 37.3% Proportion of second electrodes 40.73%37.7% Hand to driving capacitor 0.538 pF 0.504 pF Hand to inductioncapacitor 0.551 pF 0.504 pF Driving capacitor to ground 10.95 pF 10.268pF Inductive to ground capacitance 11.31 pF 10.332 pF Single finger tocapacitance of 2.584 pF 2.584 pF all electrode Variation of non-hovering0.04037267 pF 0.04034582 pF touch Mutual capacitance 0.521 pF 0.823 pF

Compared with the prior art in FIG. 6, the proportion of the area of thedummy electrodes in FIG. 2 is increased, engagement between the firstelectrode 11 and the second electrode 21 is increased, and the tracelength at which the first electrode 11 and the second electrode 21crossed is increased.

It can be known from TABLE 1, comparing technical solutions of thepresent application with the prior art, hand to driving capacitor, handto induction capacitor, driving capacitor to ground, inductive to groundcapacitance, single finger to capacitance of all electrode, andvariation of non-hovering touch are slightly decrease, but the mutualcapacitance between the first electrode (TX) and the second electrode(RX) is increased, which increases the touch sensitivity of the touchsubstrate in a grounded state.

The following is a comparison of hovering states of the prior art withthe improved type. Please refer to data in TABLE 2 for details.

TABLE 2 Comparison of hovering states of the prior art with the improvedtype Prior Improved art type Variation of two-finger coaxial hoveringtouch 0.021 0.031 Proportion of two-finger coaxial hovering touch 64.1%67.4% Variation of three-finger coaxial hovering touch 0.02 0.027Proportion of three-finger coaxial hovering touch 49.7% 56.7% Variationof four-finger coaxial hovering touch 0.015 0.02 Proportion offour-finger coaxial hovering touch 31.7% 42.6% Variation of five-fingercoaxial hovering touch 0.01 0.014 Proportion of five-finger coaxialhovering touch  19% 38.6%

It can be known from TABLE 2, when the present application is operatedwith multi fingers, the variation of the hovering touch is increased.The greater a number of fingers, the greater increased values of thevariation of the hovering touch and the proportion of the hoveringtouch, and an increased value of the touch sensitivity is more obvious.

It can be known from TABLEs 1 and 2, the present application increasesthe mutual capacitance between the first electrode and the secondelectrode by increasing the proportion of the corresponding electrodeoccupied by the dummy electrodes and the relative length between thefirst electrode and the second electrode. This increases multi-fingercoaxial capacitance variation of the product under the hovering touchand enhances the touch sensitivity of the touch substrate.

According to another aspect of the present application, a touch screenis further provided. The touch screen includes the touch substrate andfurther includes a polarizing layer and a cover layer sequentiallydisposed on the touch substrate.

According to yet another aspect of the present application, anelectronic device is further provided. The electronic device includesthe touch screen. The electronic device includes, but is not limited to,a mobile phone, a tablet, a computer monitor, a game console, atelevision, a display screen, a wearable device, and other dailyappliances or household appliances with display functions.

Working principles of the touch screen and the electronic device aresimilar to a working principle of the touch substrate. The workingprinciples of the touch screen and the electronic device can refer tothe working principle of the touch substrate, which is not repeatedherein.

The present application provides the touch substrate and the touchscreen. The touch substrate includes the touch layer. The touch layerincludes the first electrode and the second electrode. The firstelectrode includes the first protrusion and the first dummy electrode.The second electrode includes the second protrusion and the second dummyelectrode. Adjacent two first protrusions or adjacent two secondprotrusions are spaced the size of at least one sub-pixel apart. Thefirst dummy electrode and the second protrusion are spaced the size ofat least one sub-pixel apart. The second dummy electrode and the firstprotrusion are spaced the size of at least one sub-pixel apart. Thepresent application increases the mutual capacitance between the firstelectrode and the second electrode by increasing the proportion of thecorresponding electrode occupied by the dummy electrodes and therelative length between the first electrode and the second electrode.This increases multi-finger coaxial capacitance variation of the productunder the hovering touch and enhances the touch sensitivity of the touchsubstrate.

Understandably, those having ordinary skills of the art may easilycontemplate various changes and modifications of the technical solutionand technical ideas of the present application and all these changes andmodifications are considered within the protection scope of right forthe present application.

What is claimed is:
 1. A touch substrate, comprising a substrate and atouch layer formed on the substrate, wherein the touch layer comprises:at least one first electrode group arranged along a first directioncomprising at least two first electrodes arranged along a seconddirection and sequentially connected to each other, wherein any of thefirst electrodes comprises at least one first connection region outsidethe first electrodes, and any of the first connection regions comprisesat least one first protrusion; and at least one second electrode grouparranged along the second direction comprising at least two secondelectrodes arranged along the first direction and sequentially connectedto each other, wherein any of the second electrodes comprises at leastone second connection region outside the second electrodes, and any ofthe second connection regions comprises at least one second protrusion;wherein the first protrusion is disposed between two adjacent secondprotrusions, the second protrusion is disposed between two adjacentfirst protrusions, the first connection region and the second connectionregion are engaged with each other to form a connection portion of thefirst electrode and the second electrode; wherein at least one firstdummy electrode disposed in any of the first electrodes, the first dummyelectrode is uniformly distributed in the first electrode, and the firstdummy electrode is insulated from the first electrode; wherein at leastone second dummy electrode disposed in any of the second electrodes, thesecond dummy electrode is uniformly distributed in the second electrode,and the second dummy electrode is insulated from the second electrode;and wherein adjacent two first protrusions or adjacent two secondprotrusions are spaced a size of at least one sub-pixel apart, the firstdummy electrode and the second protrusion are spaced the size of atleast one sub-pixel apart, and the second dummy electrode and the firstprotrusion are spaced the size of at least one sub-pixel apart.
 2. Thetouch substrate according to claim 1, wherein a number of the firstdummy electrode in any of the first electrodes is equal to a number ofthe second dummy electrode in any of the second electrodes; and a shapeof the first dummy electrode in any of the first electrodes is same as ashape of the second dummy electrode in any of the second electrodes. 3.The touch substrate according to claim 1, wherein a pattern of any ofthe first connection regions is same as a pattern of any of the secondconnection regions.
 4. The touch substrate according to claim 3, whereinthe first protrusion and the second protrusion are cross-shaped.
 5. Thetouch substrate according to claim 3, wherein the first protrusion inany of the first connection regions and the second protrusion in any ofthe second connection regions have a same extension length; the firstprotrusion extends from the first electrode to the second dummyelectrode in the second electrode, and the second dummy electrode andthe first protrusion are spaced the size of at least one sub-pixelapart; and the second protrusion extends from the second electrode tothe first dummy electrode in the first electrode, and the first dummyelectrode and the second protrusion are spaced the size of at least onesub-pixel apart.
 6. The touch substrate according to claim 3, whereinthe first protrusion in any of the first connection regions and thesecond protrusion in any of the second connection regions have differentextension lengths; and an extension length of the first protrusionand/or the second protrusion are increased first and then decreased inthe first connection region and/or the second connection region.
 7. Thetouch substrate according to claim 1, wherein the first electrode, thefirst dummy electrode, the second electrode, and the second dummyelectrode are composed of metal meshes; and the first electrode isinsulated from and crossed with the second electrode on the touch layerthrough a breakpoint of the metal meshes, the first dummy electrode isinsulated from the first electrode through a breakpoint of the metalmeshes, and the second dummy electrode is insulated from the secondelectrode through a breakpoint of the metal meshes.
 8. The touchsubstrate according to claim 7, wherein the metal meshes comprise aplurality of first metal traces and a plurality of second metal traces;and the plurality of first metal traces are crossed with the pluralityof second metal traces to form a plurality of meshes having a same shapeas an outer circle of a corresponding sub-pixel.
 9. The touch substrateaccording to claim 1, wherein the first electrode group furthercomprises at least one first metal bridge disposed between two adjacentfirst electrodes, and the second electrode group further comprises atleast one second metal bridge disposed between two adjacent secondelectrodes; the first metal bridge, the first electrode, and the secondelectrode are a same metal layer; and the first metal bridge and thesecond metal bridge are different metal layers.
 10. A touch screen,comprising a touch substrate; wherein the touch substrate comprises asubstrate and a touch layer formed on the substrate, and the touch layercomprises: at least one first electrode group arranged along a firstdirection comprising at least two first electrodes arranged along asecond direction and sequentially connected to each other, wherein anyof the first electrodes comprises at least one first connection regionoutside the first electrodes, and any of the first connection regionscomprises at least one first protrusion; and at least one secondelectrode group arranged along the second direction comprising at leasttwo second electrodes arranged along the first direction andsequentially connected to each other, wherein any of the secondelectrodes comprises at least one second connection region outside thesecond electrodes, and any of the second connection regions comprises atleast one second protrusion; wherein the first protrusion is disposedbetween two adjacent second protrusions, the second protrusion isdisposed between two adjacent first protrusions, the first connectionregion and the second connection region are engaged with each other toform a connection portion of the first electrode and the secondelectrode; wherein at least one first dummy electrode disposed in any ofthe first electrodes, the first dummy electrode is uniformly distributedin the first electrode, and the first dummy electrode is insulated fromthe first electrode; wherein at least one second dummy electrodedisposed in any of the second electrodes, the second dummy electrode isuniformly distributed in the second electrode, and the second dummyelectrode is insulated from the second electrode; and wherein adjacenttwo first protrusions or adjacent two second protrusions are spaced asize of at least one sub-pixel apart, the first dummy electrode and thesecond protrusion are spaced the size of at least one sub-pixel apart,and the second dummy electrode and the first protrusion are spaced thesize of at least one sub-pixel apart.
 11. The touch screen according toclaim 10, wherein a number of the first dummy electrode in any of thefirst electrodes is equal to a number of the second dummy electrode inany of the second electrodes; and a shape of the first dummy electrodein any of the first electrodes is same as a shape of the second dummyelectrode in any of the second electrodes.
 12. The touch screenaccording to claim 10, wherein a pattern of any of the first connectionregions is same as a pattern of any of the second connection regions.13. The touch screen according to claim 12, wherein the first protrusionand the second protrusion are cross-shaped.
 14. The touch screenaccording to claim 12, wherein the first protrusion in any of the firstconnection regions and the second protrusion in any of the secondconnection regions have a same extension length; the first protrusionextends from the first electrode to the second dummy electrode in thesecond electrode, and the second dummy electrode and the firstprotrusion are spaced the size of at least one sub-pixel apart; and thesecond protrusion extends from the second electrode to the first dummyelectrode in the first electrode, and the first dummy electrode and thesecond protrusion are spaced the size of at least one sub-pixel apart.15. The touch screen according to claim 12, wherein the first protrusionin any of the first connection regions and the second protrusion in anyof the second connection regions have different extension lengths; andan extension length of the first protrusion and/or the second protrusionare increased first and then decreased in the first connection regionand/or the second connection region.
 16. The touch screen according toclaim 10, wherein the first electrode, the first dummy electrode, thesecond electrode, and the second dummy electrode are composed of metalmeshes; and the first electrode is insulated from and crossed with thesecond electrode on the touch layer through a breakpoint of the metalmeshes, the first dummy electrode is insulated from the first electrodethrough a breakpoint of the metal meshes, and the second dummy electrodeis insulated from the second electrode through a breakpoint of the metalmeshes.
 17. The touch screen according to claim 16, wherein the metalmeshes comprise a plurality of first metal traces and a plurality ofsecond metal traces; and the plurality of first metal traces are crossedwith the plurality of second metal traces to form a plurality of mesheshaving a same shape as an outer circle of a corresponding sub-pixel. 18.The touch screen according to claim 10, wherein the first electrodegroup further comprises at least one first metal bridge disposed betweentwo adjacent first electrodes, and the second electrode group furthercomprises at least one second metal bridge disposed between two adjacentsecond electrodes; the first metal bridge, the first electrode, and thesecond electrode are a same metal layer; and the first metal bridge andthe second metal bridge are different metal layers.